Yellow-brown spruce beetle
| Yellow-brown spruce beetle | ||||||||||||
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Yellow-brown spruce beetle ( Hylurgops palliatus ) |
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| Scientific name | ||||||||||||
| Hylurgops palliatus | ||||||||||||
| ( Gyllenhal , 1813) |
The yellow-brown spruce beetle , ( Hylurgops palliatus ) is a weevil from the subfamily of the bark beetle (Scolytinae). Since it creates its breeding systems in the bark of the host trees, it is counted among the bark breeders.
features
The beetles are 2.5 to 3.2 millimeters long and have a black body. The head is visible from above and slightly elongated like a trunk. The pronotum is wider than long, narrowed towards the front, somewhat narrower than the elytra , wrinkled dots and with a fine, point-free central keel. The elytra, which are provided with strong rows of dots, are not notched or serrated at the basal margin and without cusps and are widened at the back. The spaces between the rows of dots have very short hairs and rows of grains and are as wide as the rows of dots. The antennae has three seams and is egg-shaped, the antennae is seven-limbed. The third phalanx is heart-shaped and bilobed. Pronotum, elytra and legs are colored reddish brown.
distribution
The species is common in Europe .
Way of life
Hylurgops palliatus occurs less often in spruce trees ( Picea ) in pine ( Pinus ), silver fir ( Abies alba ), Nordmann fir ( Abies nordmanniana ), Abies pectinata and European larch ( Larix decidua ). The one-armed, two to five centimeter long maternal duct is laid out as a longitudinal duct that usually begins clearly with a boot-shaped hook. The larval ducts are noticeably long, irregular and soon become confused, so that no clear feeding pattern can be seen. There are one or two generations a year with flight times in April and July. The animals live monogamous .
The beetles are strongly secondary, which means that weakened or damaged host plants, as are often found after litter and break events, are almost exclusively colonized. Sometimes they appear en masse in broken wood. As a result, they are breeding space competitors of other species such as the book printer ( Ips typographus ) and can delay, but not prevent, a mass reproduction of these.
Systematics
Synonyms
The following synonyms are known from the literature for Hylurgops palliatus :
- Ips piceus Marsham, 1802
- Hylesinus piceus Marsham, 1802
- Hylesinus rufus Marsham, 1802
- Hylesinus palliatus Gyllenhal, 1813
- Hylesinus abietiperda Bechstein, 1818
- Hylesinus fuscus Duftschmid, 1825
- Hylesinus marginatus Duftschmid, 1825
- Hylesinus rufescens Stephens, 1830
- Hylesinus Helferi Villa, 1835
- Hylurgops parvus Eggers, 1933
swell
Individual evidence
- ↑ Hylurgops palliatus Gyllenhal, 1813. Fauna Europaea, Version 1.3, April 19, 2007 , accessed on October 13, 2008 .
literature
- Fritz Schwerdtfeger : The forest diseases. Textbook of forest pathology and forest protection. 4th, revised edition. Parey, Hamburg and Berlin 1981, ISBN 3-490-09116-7
- Sabine Grüne : Handbook for the determination of the European bark beetles . M. & H. Schaper Verlag, Hannover 1979, ISBN 3-7944-0103-4
- Edmund Reitter : Fauna Germanica - The beetles of the German Empire . Volume 5, KG Lutz, Stuttgart 1916
- Edmund Reitter: Fauna Germanica - The beetles of the German Empire . 5 volumes, Stuttgart KG Lutz 1908 - 1916, digital library volume 134, Directmedia Publishing GmbH, Berlin 2006, ISBN 3-89853-534-7
